Roof construction.



M. B. ARMSTRONG.

ROOF CONSTRUCTION. APPUCATION FILED APR. 12, 1915.

- Patented Aug. 28, 1917.

P TE

MARTIN B. ARMSTRONG, OF LONDON, OHIO, ASSIGNOR TO THE THOMAS & ARMSTRONG COMPANY, OF LONDON, OHIO, A CORPORATION OF OHIO.

ROOF CONSTRUCTION.

Specification of Letters Patent. Patgnted Aug, 28, 1917,

Application filed April 12, 1915. Serial No. 20,785.

To all whom it may concern:

Be it known that I, IVIARTIN B. ARM- STRONG, a citizen of the United States, residing at London, in the county of Madison and State of Ohio, have invented certain new and useful Improvements in Roof Constructiou, of which the following is a specification.

My invention relates to roof construction, it being more particularly directed to silo roofs. As is well known, silos are usually circular in cross section and extend to a considerable height, but care is not always taken in their construction to maintain the diameter sought and also to maintain a true circular form. It, therefore, becomes a matter of considerable difliculty to build a roof to accommodate the distorted circular walls of varying sizes.

The main object of my invention, therefore. resides in the provision of a type of roof adapted to varying sizes and shapes of silos. In this connection, it is my object to provide a flange member of considerable width, this flange or eaves flashing member being circular in form and being constructed to normally overhang both the inside and outside of the upper edge of the silo body.

A further object of my invention resides in the construction adopted for securing this flange member and the roof sections borne by it in position upon the silo body.

Other objects of my invention will become more apparent after a detailed description of the accompanying sheet of drawings, in which similar characters of reference des ignate corresponding parts, and in which:

Figure 1 is a partial side elevation and partial section of my roof shown applied to a silo body, and,

Fig. 2 is an enlarged detail section showing the means of attachment of my roof to the silo.

In these drawings, I have shown what is known as a gambrel roof, my invention being particularly adaptable to this style of roof, although not necessarily limited there to. In the construction of this roof, I have provided a plurality of tapering roof sections 1, the edges of these sections being so formed that they will interlock to form a frusto-conical section as clearly shown in Fig. 1, this section being surmounted by the upper section designated generally by the reference numeral 2. The lower ends of these roof sections are designed to bear against the angle 3, this angle being preferably made in sections and when assembled presenting a circular form. These roof sections when assembled bear against the up standing leg, as shown, and are rigidly held in position by the strap elements shown at l, it being noted that each roof section is provided with one of these straps whose extremity is formed as at 5 to embrace the outwardly entending leg of the angle 3, the strap members themselves being detachably secured to each roof section by means of the bolt and nut structure shown at 6. In order to adapt this roof to silos varying slightly in dimension and also in circular section, I have provided an eaves flashing flange 7, this flange being usually furnished in sec tions and bolted together and when thus assembled, being of a size to overhang both the inside and outside of the upper edge of the silo body designated generally by the reference numeral 8. I preferably rivet the sections forming the flange 7 to the sections forming the angle 3, as is shown at 9, although it will be understood that these connections may be made detachable, if desired. The roof section is then made to rest upon the upper edge of the silo body in the manner shown in Fig. 1, care being taken that the same length of projection of the flange 7 extends around the entire circumference. In order to form a means of attachment of the roof to the silo body, I have provided a plurality of straps 10, these straps being bendable in nature and being attached to one end as is shown at 9, while the opposite ends are to be bent to the shape required for them to bear either against the inside or outside of the silo body, as shown, their attachment being completed by the provision of a plurality of nails or screws such as shown at 11.

It will thus appear that I have provided a type of roof which may be applied to silos whose diameters vary within reasonable limits and whose circular sections are not always true. This is rendered possible because of the width of the flange 9, this flange being designed torest upon the upper edge of the silo body and the roof as a whole being held in position by the straps 10 which may be bent as desired to fit the particular silo to which the roof is applied.

In order to supplement the straps 10, I have provided a plurality of cords such as are shown at 12, these cords being attached at one end to the upper portion of the roof structure 2 and at their opposite ends to the silo body. This latter feature also insures the maintenance of the roof section 2 in its proper position upon the sub-roof structure formed by the sections 1.

WV hat I claim, is:

1. A roof and means for supporting the same from a building of slightly different size or contour in plan comprising a rigid endless member, an eaves flashing, means whereby said member is supported from the walls of the building adaptable to variations between the size or contour of the building and the size or contour of said member, the roof being supported by said member, and means for attaching the inner edge of said eaves flashing from said endless member.

2. A roof and means for supporting the same from a building of slightly diii'erentsize or contour in plan comprising a rigid ring member, an eaves flashing member attached to said ring member, bendable straps depending from one of said members and thereby capable of attachment to the Wall of a building in a contour line slightly varying from that of the ring member, said eaves flashing member being adapted to overhang the outer wall of a building when the bendable straps are attached to the wall thereof, and root members mutually supporting each other and supported as a whole on said rigid ring member.

In testimony whereof I aliix my signature in presence of two witnesses.

h IARTIN B. ARMSTRONG. Witnesses HAZEL E. THOMPSON, FANNY SMITH.

Copies of this patent may be obtained for five cents each, by addressing the Gommissioner of Patents, Washington, D. C. 

